ezflows
Example output from Seedream 4.5

ByteDance

Seedream 4.5

Photorealistic image generation with precise text understanding

imagelive
Model id
seedream-4.5
Typical run
~39s
Inputs
8 parameters
Contract
async

Call it

bash
curl -X POST https://api.ezflows.io/v1/models/seedream-4.5 \
  -H "Authorization: Bearer $EZFLOWS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt": "a wide shot of a desert at dusk"}'

# { "request_id": "req_8f2a41c9", "poll_url": "…", "status": "queued" }

Parameters

NameTypeDefaultDescription
prompt requiredstringDescribe the image. Include subjects like 'serene evening at the beach'.
image_inputstring[]Input images to guide creation, use 1-3 URLs for reference.
sizeenum2KImage resolution quality level. '2K' for standard (8-9M pixels), '4K' for high-res (up to 16.7M pixels). When used alone, API optimizes dimensions. When combined with aspect_ratio, dimensions are calculated but may not reach full 4K quality for extreme ratios (e.g., 9:16). Use 'custom' for exact control.
aspect_ratioenummatch_input_imageImage proportions. 'match_input_image' (recommended with image_input) lets API match input aspect ratio and optimize quality. Other ratios (1:1, 16:9, 9:16, etc.) calculate dimensions from size preset. Note: Non-square ratios with 4K may produce lower pixel counts than maximum (e.g., 9:16 gives ~9M pixels vs 16.7M max). Ignored when size is set to custom and both height and width are provided
widthinteger2048Custom width in pixels (only when size='custom'). Range: 1024-4096. Total pixels (width × height) must be 3.7M-16.7M. Dimensions rounded to 64-pixel increments. For maximum 4K quality with aspect ratios, calculate dimensions manually.
heightinteger2048Custom height in pixels (only when size='custom'). Range: 1024-4096. Total pixels (width × height) must be 3.7M-16.7M. Dimensions rounded to 64-pixel increments. Images below 3.7M pixels will be auto-scaled up.
sequential_image_generationenumdisabledChoose sequence: 'auto' for batch, 'disabled' for individual images.
max_imagesinteger1Limit generated images: 1 for single output, 5 for more variety.

What a run costs

$0.04average · per run
$0.00for a failed run
~39smeasured mean, end to end
Compare every price

How it stacks up

ModelPriceUnitTypical run
Seedream 4.5avg $0.04run~39s
Nano Banana 2 Litefrom $0.038image~12s
GPT Image 2.5 Flareavg $0.037run~17s
Seedream 4.0 (4k)avg $0.035run~25s
Seedream 5.0 Lite: Image-to-Imageavg $0.035run~47s